diff --git a/hecl/extern/boo b/hecl/extern/boo
index cb2b33a42..d6063f4a4 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit cb2b33a42b61f00348e04cb9c5e2f3a12a8f46f0
+Subproject commit d6063f4a4dff1cdd0cad95e233dfefd45193e8a0